The Thirteen Colonies were a group of British colonies on the east coast of North
America ..... The first British empire centered on the 13 American colonies, which
attracted large numbers of settle...

Delaware was the first colony to ratify the United States Constitution on December 7, 1787, effectively becoming the first state of the United States.

The first thirteen colonies to sign the Constitution and become states were, in order: Delaware, Pennsylvania, New Jersey, Georgia, Connecticut, Massachusetts, Maryland, New Hampshire, Virginia, New York, North Carolina, and Rhode Island.